Solar questions, answered.

Solar panels typically last 25–30 years or more. This doesn't mean they stop producing electricity after that period—only that their efficiency gradually decreases over time. Most panels retain 80–85% of their original output even after 25 years.

Solar panels generally include a 12-year product warranty and a 25-year performance warranty. Inverters are usually covered for 3-5 years, and solar batteries carry a 5–7 year product warranty, with a typical lifespan of 16–20 years depending on usage and model.

If a roof leak is caused by the solar installation, it will be covered by the installer's workmanship warranty of 5 years. However, if the leak is due to pre-existing roof damage or unrelated issues, it is not covered. A professional solar installer will always inspect your roof before installation to prevent this.

Yes. Solar panels still generate electricity during cloudy or rainy days, but output is reduced—typically by 30% depending on cloud density. Even in less sunny climates, solar remains effective and financially viable.

Adding batteries allows you to store unused solar power for nighttime or brownouts. This is ideal for areas with unreliable grids or businesses that need uninterrupted power. While batteries increase upfront costs, they offer energy independence and eliminate the need for diesel generators. Higher savings will be made because no power will have to be sold and bought back from the grid at a higher price.

For residential systems, installation usually takes 1–4 days, depending on system size and roof condition. Commercial and industrial projects take longer—ranging from 2 weeks to several months—based on complexity and system size.

Solar panels are low-maintenance. Occasional cleaning (1–3 times per year) to remove dust or debris is enough. Our systems include monitoring apps that track performance 24/7, allowing issues to be detected early. Warranty is up to 5 years to make sure all the components and system performance are at optimal.

Savings depend on system size and usage. An on-grid system can save 40–60% of monthly bills, while hybrid systems (with batteries) can reduce costs by up to 100%. For businesses with high electricity consumption, ROI is typically reached within 3–5 years. For commercial projects the ROI is between 2-4 years.

You can pay in cash or in 0% interest in-house installments. Installments are usually paid through post-dated checks (PDCs) or bank transfer, and if you don't have PDCs, we'll guide you in getting them from your bank. We don't offer bank financing, but you can take a cash loan from your bank or credit card (credit-to-cash), pay us in cash, which can get you a discount, and repay your bank monthly. For GSIS and Pag-IBIG solar loans, we prepare the documents you need.

Yes. We provide comprehensive after-sales support, covering system monitoring, troubleshooting, and warranty services. To maintain peak efficiency, we conduct panel cleaning and performance checks every six months for the first three years. With branches strategically located near our installations, our technicians are typically on-site within a few hours when needed.

A grid-tie system works with Meralco or your electric cooperative and has no battery, so it costs the least but switches off during brownouts. A hybrid system adds a battery, so your essentials keep running during brownouts and at night. An off-grid system isn't connected to the utility at all and runs on solar and batteries, which suits islands and remote areas.

It depends on your system. A grid-tie system shuts off during a brownout for safety, even when it's sunny. A hybrid system switches to its battery and solar within a split second, and an off-grid system isn't affected at all.

For most homes, a 5 kWh battery keeps the essentials (ref, lights, Wi-Fi, fans and a TV) running through a typical 4 to 6 hour brownout. If you want a bedroom aircon on backup, or brownouts in your area last all night, plan for 10 kWh or more. We size it from the appliances you want running.

Yes, if your system uses a battery-ready (hybrid) inverter. With a standard grid-tie inverter, a hybrid inverter needs to be added first. If you think you'll want a battery later, ask for a battery-ready inverter from the start.

Yes. A 1HP inverter aircon running about 8 hours in the daytime needs roughly 1 to 1.5 kW of solar panels. Running it at night or during a brownout also needs a battery. Inverter aircons are much easier to run on solar than non-inverter units.

Quality panels are tested for strong wind loads, so the panels themselves are rarely the problem. What matters is the mounting: brackets fixed to the roof structure, enough anchor points, and rust-resistant rails and bolts. We check your roof before installation.

Yes. El Niño usually means more sunny days, which gives panels more light. But panels lose efficiency in extreme heat, around 10 to 25 percent on the hottest days, and less rain means they get dusty faster, so they may need cleaning more often during long dry spells.

Yes, with a grid-tie or hybrid system through net metering. Homes can net-meter systems up to 100 kW, and since April 2026 businesses can go up to 1 MW. Exported power is credited on your bill at a lower rate than what you pay for grid power, so the biggest savings come from using your own solar first. We can help you apply with your utility.

Yes. GSIS offers the Ginhawa Solar Energy Loan for government employees, and Pag-IBIG members can use Pag-IBIG financing for solar. SSS has announced a solar loan that isn't open yet. Most of these loans need a formal quotation and documents from your solar provider. We prepare those for you after a site visit.

Fill in our free solar assessment form or contact your nearest branch. Tell us your average monthly electric bill and what you want the system to do (lower your bill, backup for brownouts, or both). We'll schedule a free site visit and send a custom proposal with payment options.